Granted Patent
Utility
US 5,840,825 · App. 08/760,239
Gas barrier coating compositions containing platelet-type fillers
Inventors:
Leland H. Carlblom, Jerome A. Seiner
Patented Case
View Patent ↗
Granted: Nov 24, 1998
Filed: Dec 4, 1996
Inventors
Leland H. Carlblom
Jerome A. Seiner
Assignee (at issue)
PPG Incustries, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.